linux-ext4 - [PATCH] libext2fs: change getpagesize to sysconf

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Message-Id: <1323274568-13551-1-git-send-email-vapier@gentoo.org>
Date:	Wed,  7 Dec 2011 11:16:08 -0500
From:	Mike Frysinger <vapier@...too.org>
To:	linux-ext4@...r.kernel.org
Subject: [PATCH] libext2fs: change getpagesize to sysconf

Newer versions of glibc no longer export the getpagesize() prototype when
using recent versions of POSIX (_XOPEN_SOURCE).  So building tdb.c gives
use implicit function declaration warnings.  Fix the issue by using the
portable sysconf() function which returns the same answer.

Signed-off-by: Mike Frysinger <vapier@...too.org>
---
 lib/ext2fs/tdb.c |    6 +-----
 1 files changed, 1 insertions(+), 5 deletions(-)

diff --git a/lib/ext2fs/tdb.c b/lib/ext2fs/tdb.c
index 83c834e..61e30ed 100644
--- a/lib/ext2fs/tdb.c
+++ b/lib/ext2fs/tdb.c
@@ -114,10 +114,6 @@ static TDB_DATA tdb_null;
 #define u32 unsigned
 #endif
 
-#ifndef HAVE_GETPAGESIZE
-#define getpagesize() 0x2000
-#endif
-
 typedef u32 tdb_len_t;
 typedef u32 tdb_off_t;
 
@@ -3839,7 +3835,7 @@ struct tdb_context *tdb_open_ex(const char *name, int hash_size, int tdb_flags,
 	tdb->hash_fn = hash_fn ? hash_fn : default_tdb_hash;
 
 	/* cache the page size */
-	tdb->page_size = getpagesize();
+	tdb->page_size = sysconf(_SC_PAGESIZE);
 	if (tdb->page_size <= 0) {
 		tdb->page_size = 0x2000;
 	}
-- 
1.7.6.1

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